Google PCA Manage and provision cloud infrastructure Practice Question
This PCA practice question tests your understanding of manage and provision cloud infrastructure. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company has two VPC networks in the same project: vpc-a (us-central1) and vpc-b (us-east1). They want to allow communication between instances in these VPCs using internal IPs. Which action should they take?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Set up VPC Network Peering between vpc-a and vpc-b.
VPC Network Peering allows direct internal IP communication between two VPC networks, regardless of region, as long as they are in the same project or across projects. This is the simplest and most efficient method for enabling private RFC 1918 connectivity without requiring VPN tunnels or moving resources. Peering uses Google's internal infrastructure, so traffic stays within the Google network and does not traverse the public internet.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Move both VPCs to the same region.
Why it's wrong here
VPC peering works across regions, so moving is unnecessary.
✓
Set up VPC Network Peering between vpc-a and vpc-b.
Why this is correct
VPC peering enables internal IP communication across VPCs without any gateway.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a VPN tunnel between the VPCs.
Why it's wrong here
VPN is more complex and incurs additional cost; VPC peering is simpler and free.
✗
Ensure firewall rules allow ingress from the other VPC's subnet ranges.
Why it's wrong here
Firewall rules are needed but only after peering is established; the primary action is to set up peering.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the misconception that VPCs must be in the same region to use internal IPs, or that a VPN tunnel is required for cross-region connectivity, when in fact VPC Network Peering works across regions within the same project or across projects.
Detailed technical explanation
How to think about this question
VPC Network Peering uses the Google Cloud internal backbone to exchange routes between the two VPCs, enabling subnet-to-subnet communication without any intermediate devices. Each VPC's firewall rules still apply independently, so you must also configure ingress rules to allow traffic from the peered VPC's subnet ranges. A common subtlety is that VPC Network Peering does not support transitive peering—if vpc-a is peered with vpc-b and vpc-b is peered with vpc-c, vpc-a cannot reach vpc-c through vpc-b.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PCA question in full detail.
Manage and provision cloud infrastructure — This question tests Manage and provision cloud infrastructure — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Set up VPC Network Peering between vpc-a and vpc-b. — VPC Network Peering allows direct internal IP communication between two VPC networks, regardless of region, as long as they are in the same project or across projects. This is the simplest and most efficient method for enabling private RFC 1918 connectivity without requiring VPN tunnels or moving resources. Peering uses Google's internal infrastructure, so traffic stays within the Google network and does not traverse the public internet.
What should I do if I get this PCA question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This PCA practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCA exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.